.topbannerwrap {
  position: relative;
  display: flex;
  width: 100%;
  height: 360px;
  justify-content: center;
}
.topbannerwrap > .topbannerbackground {
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
  opacity: 0.8;
  position: absolute;
}
.topbannerwrap > .topleftheader {
  width: 910px;
  height: 360px;
}
.topbannerwrap > .topbannerleftbt {
  width: 48px;
  height: 75px;
  margin-top: 100px;
  margin-right: 20px;
  background-color: transparent;
}
.topbannerwrap > .topbannerrightbt {
  width: 48px;
  height: 75px;
  margin-top: 100px;
  margin-left: 20px;
  background-color: transparent;
}
